Home / 838,561,799.40-1,257,842,699.10-256,294,919.40

Finding the Fourth Proportional to 838,561,799.40, 1,257,842,699.10 and 256,294,919.40

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Solution

The fourth proportional to 838,561,799.40, 1,257,842,699.10 and 256,294,919.40 is: 384,442,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,561,799.40 : 1,257,842,699.10 = 256,294,919.40 : x
  2. Step 2: Convert to fraction form
    838,561,799.40/1,257,842,699.10 = 256,294,919.40/x
  3. Step 3: Cross multiply
    838,561,799.40x = 1,257,842,699.10 × 256,294,919.40
  4. Step 4: Simplify right side
    838,561,799.40x = 322,378,693,183,712,960
  5. Step 5: Solve for x
    x = 322,378,693,183,712,960/838,561,799.40
  6. Step 6: Final answer
    x = 384,442,379.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.